Article
Materials Science, Multidisciplinary
Raphael Mariano de Souza, Vinicios Andreatta, Inamara Amanda Souza Santos, Eduardo Junca, Felipe Fardin Grillo, Jose Roberto de Oliveira
Summary: This study investigated the impact of temperature, chemical composition, slag properties, and hot metal silicon content on the efficiency of steel dephosphorization. Through computational thermodynamics and correlation observation, it was found that CaO activity is the most important factor, while higher silicon content in hot metal leads to lower dephosphorization efficiency. The Dephosphorization Factor was identified as a key parameter to predict slag efficiency in dephosphorization.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Metallurgy & Metallurgical Engineering
Frank N. H. Schrama, Elisabeth M. Beunder, Sourav K. Panda, Hessel-Jan Visser, Elmira Moosavi-Khoonsari, Jilt Sietsma, Rob Boom, Yongxiang Yang
Summary: Hot metal desulphurisation (HMD) process involves removing sulphur using slag, but the highest costs come from iron losses when the slag is removed. Lowering slag viscosity by changing composition can reduce iron losses, but also decrease sulphur removal capacity, requiring optimization. This study investigates the optimal HMD slag composition considering both sulphur removal capacity and iron losses.
IRONMAKING & STEELMAKING
(2021)
Article
Materials Science, Multidisciplinary
Li Zeng, Zhong Zheng, Xiaoyuan Lian, Kai Zhang, Mingmei Zhu, Kaitian Zhang, Chaoyue Xu, Fei Wang
Summary: This work studies the dynamic scheduling problem of hot metal ladles in the steel plant and develops a data-driven three-layer approach to solve this problem. A dynamic scheduling optimization model with a minimum average turnover time as the objective is constructed. The proposed method effectively reduces the fluctuation and operation time of the hot metal ladle and improves the stability of the ironmaking and steelmaking interface production rhythm.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Hiroyuki Matsuura, Xiao Yang, Guangqiang Li, Zhangfu Yuan, Fumitaka Tsukihashi
Summary: The treatment of ironmaking and steelmaking slags is crucial for the sustainable development of the steel industry. Japan and China are two major steel producing countries that have been focusing on developing new technologies to reduce slag emissions or promote slag utilization. While Japan has achieved almost complete reuse or recycling of slags, future applications in conventional sectors may be challenging due to stagnant infrastructural investments. China, on the other hand, has steadily increased the utilization ratios of ironmaking and steelmaking slags through technological advances, although increasing the utilization ratio of basic oxygen furnace slags remains a major challenge.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Review
Chemistry, Physical
Zhiyuan Fan, S. Julio Friedmann
Summary: With the urgency to transition to a net-zero CO2 economy, governments and industries are focusing on decarbonizing hard-to-abate sectors like steel making. Current decarbonization technologies have limitations, and achieving deep decarbonization in the iron and steel industry will require a combination of factors including cost and technical maturity.
Article
Energy & Fuels
Siti Maisurah Zakaria, Siti Mazlina Mustapa Kamal, Mohd Razif Harun, Rozita Omar, Shamsul Izhar Siajam
Summary: Chlorella species are highly cultivated microalgae with valuable health benefits, and an effective method using pressurized hot water extraction (PHWE) has been developed to extract phenolic compounds from Chlorella microalgae. The extraction process follows first-order kinetics and is strongly dependent on temperature, with increasing temperature leading to higher mass transfer coefficient values. The activation energy for the extraction treatment is calculated as 11.146 kJ/mol.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Metallurgy & Metallurgical Engineering
Frank N. H. Schrama, Elisabeth M. Beunder, Sourav K. Panda, Hessel-Jan Visser, Elmira Moosavi-Khoonsari, Adam Hunt, Jilt Sietsma, Rob Boom, Yongxiang Yang
Summary: This study explores the fundamentals behind optimal hot metal desulphurisation (HMD) slag and validates them through methods like Monte Carlo simulation. The research found that understanding the optimal slag composition has practical value for industrial HMD processes.
IRONMAKING & STEELMAKING
(2021)
Article
Mechanics
Jinhong Yang, Quanzi Yuan
Summary: This article introduces the phenomenon of dissolutive wetting, which refers to the spreading of liquid on a soluble substrate. A hydrodynamic model is proposed to analyze the interface shape, flow, and solute transport in dissolutive wetting, taking into account the effects of Marangoni and buoyancy. Two dimensionless numbers, Ya and Pe', are proposed to plot a phase diagram of dissolutive wetting based on theoretical analysis and experiments. The study investigates the flow field, concentration field, and solid-liquid interface shape for different types of dissolutive wetting, and discovers a new type of dissolutive wetting resulting from the competition between Marangoni convection and buoyancy. The insights provided by this study have significant implications in material joining processes, material synthesis, and structural fabrication.
Article
Materials Science, Multidisciplinary
Bo Zhang, Ruifang Wang, Chengjun Liu, Maofa Jiang
Summary: In this study, a novel method for vanadium slag residue (VSPR) digestion and recovery of valuable elements has been proposed. The carbothermic reduction roasting of VSPR led to the decomposition of stable spinel phase and the formation of pre-reduced VSPR (PR-VSPR). The addition of CaO significantly improved the smelting performance of VSPR and PR-VSPR. Desulfurization rates of the hot metal reached the requirement for steelmaking, and iron oxides in VSPR and PR-VSPR were successfully reduced into hot metal. Majority of chromium and vanadium from PR-VSPR were recovered in hot metal, indicating its advantage in the recovery of valuable elements.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Bohan Tian, Guangsheng Wei, Xin Li, Rong Zhu, Hao Bai, Weijian Tian, Kai Dong
Summary: This study analyzed the economic and environmental indices of electric arc furnaces with hot metal charging in China. The results showed that a 50% hot metal ratio can achieve a good balance between economic and environmental performance, making it more advantageous compared to other processes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Wenhe Wu, Rong Zhu, Guangsheng Wei, Kai Dong, Juanjuan Jiang, Bin Chen
Summary: Ironmaking and steelmaking industries are major sources of CO2 emissions, but using recycled CO2 gas in blast furnaces can help reduce emissions. The reaction of CO2 with carbon can produce CO gas, which further undergoes oxidation to CO2. However, this process may cool the furnace and impact its operation, requiring heat supplementation methods to offset the heat loss.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Zifeng Luo, Haiyan Leng, Xingbo Han, Wei Liu, Guo Yang, Zhaowei Ma
Summary: The effects of different preparation methods on the microstructure, activation properties, and hydrogen absorption properties of Zr7V5Fe alloy were systematically investigated. It was found that the annealed alloy had the largest cell volume of the main hydrogen-absorbing phase ZrV2, while the melt-spun alloy and melt-spun & annealed alloy had smaller cell volumes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Chemical
Chenyang Xu, Jianliang Zhang, Yaozu Wang, Qiuye Cai, Jian Wang, Zhengjian Liu
Summary: This study investigates the reduction of Fe2O3 pellets under hydrogen-rich conditions in blast furnaces. The results show that the reduction process is affected by multiple mechanisms, and the apparent activation energy peaks at reduction degrees of 11% and 70%. Additionally, the study establishes a multistep reduction kinetics model and explores the pore structure formed by hydrogen-rich reduction, finding that the increased volume fractal dimension of the pore structure improves the reduction degree of the pellet.
MINERALS ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Artur S. C. Rego, Carolina V. B. Marprates, Talita S. X. Silva, Joao G. Neto, Rogerio C. S. Navarro, Rodrigo F. M. Souza, Eduardo A. Brocchi
Summary: This study proposed two different approaches for kinetic modeling of sulfate thermal decomposition: a graphical method (sigmoid) and a stochastic method (particle swarm optimization - PSO). It was found that the presence of potassium sulfate decreased the decomposition temperature of aluminum sulfate, and while the results of both methods agreed to a certain extent, they did not provide the same values. The determined apparent orders and activation energies varied between the two methods, with the mixture of sulfates showing the lowest activation energy values and pure aluminum sulfate having the highest.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Green & Sustainable Science & Technology
Yongfeng Liu, Wenxuan Zhang, Xin Zhang, Limei Yang, Zhenguo Huang, Fang Fang, Wenping Sun, Mingxia Gao, Hongge Pan
Summary: Hydrogen storage remains a huge challenge for the development of a sustainable energy system, despite its importance. Light metal hydrides have high hydrogen densities but suffer from slow kinetics and poor reversibility due to strong bonds between metal atoms and hydrogen. Nanoscale particles offer a promising solution to tailor the properties of light metal hydrides and improve their performance. This review summarizes the preparation methods and hydrogen storage performance of nanostructured light metal hydrides, discusses the challenges, and explores future research prospects, highlighting the combination of nanostructuring and nanocatalysis for practical hydrogen carriers.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Metallurgy & Metallurgical Engineering
Dharm Jeet Gavel, Qingshi Song, Allert Adema, Jan van der Stel, Jilt Sietsma, Rob Boom, Yongxiang Yang
IRONMAKING & STEELMAKING
(2020)
Article
Metallurgy & Metallurgical Engineering
Frank N. H. Schrama, Elisabeth M. Beunder, Hessel-Jan Visser, Jilt Sietsma, Rob Boom, Yongxiang Yang
STEEL RESEARCH INTERNATIONAL
(2020)
Article
Metallurgy & Metallurgical Engineering
Frank N. H. Schrama, Fuzhong Ji, Adam Hunt, Elisabeth M. Beunder, Rhian Woolf, Alison Tuling, Peter Warren, Jilt Sietsma, Rob Boom, Yongxiang Yang
IRONMAKING & STEELMAKING
(2020)
Article
Metallurgy & Metallurgical Engineering
Dharm Jeet Gavel, Allert Adema, Jan van der Stel, Tim Peeters, Jilt Sietsma, Rob Boom, Yongxiang Yang
Summary: The physicochemical behavior of pellets, sinters and their mixture were investigated through smelting and quenching experiments, revealing three distinct stages of bed shrinkage in different ferrous raw-material beds. In a mixed ferrous bed, the pellets and sinter were found to control the first and third stages respectively, while the behavior of the second stage initially resembled that of pellets and later that of sinter.
IRONMAKING & STEELMAKING
(2021)
Article
Metallurgy & Metallurgical Engineering
Dharm Jeet Gavel, Allert Adema, Jan van der Stel, Jilt Sietsma, Rob Boom, Yongxiang Yang
IRONMAKING & STEELMAKING
(2020)
Article
Metallurgy & Metallurgical Engineering
Frank N. H. Schrama, Elisabeth M. Beunder, Sourav K. Panda, Hessel-Jan Visser, Elmira Moosavi-Khoonsari, Jilt Sietsma, Rob Boom, Yongxiang Yang
Summary: Hot metal desulphurisation (HMD) process involves removing sulphur using slag, but the highest costs come from iron losses when the slag is removed. Lowering slag viscosity by changing composition can reduce iron losses, but also decrease sulphur removal capacity, requiring optimization. This study investigates the optimal HMD slag composition considering both sulphur removal capacity and iron losses.
IRONMAKING & STEELMAKING
(2021)
Article
Metallurgy & Metallurgical Engineering
Frank N. H. Schrama, Elisabeth M. Beunder, Sourav K. Panda, Hessel-Jan Visser, Elmira Moosavi-Khoonsari, Adam Hunt, Jilt Sietsma, Rob Boom, Yongxiang Yang
Summary: This study explores the fundamentals behind optimal hot metal desulphurisation (HMD) slag and validates them through methods like Monte Carlo simulation. The research found that understanding the optimal slag composition has practical value for industrial HMD processes.
IRONMAKING & STEELMAKING
(2021)
Article
Metallurgy & Metallurgical Engineering
Frank N. H. Schrama, Elisabeth M. Beunder, Ali Emami, Chris M. Barnes, Johan W. K. van Boggelen, Jilt Sietsma, Rob Boom, Yongxiang Yang
Summary: The HIsarna process is a low-CO2 ironmaking process that has the potential to help the steel industry in reducing their carbon footprint. Despite the higher sulfur concentration and lower temperature of HIsarna hot metal leading to increased total reagent consumption, the specific magnesium consumption actually decreases compared to desulfurization of blast furnace hot metal. Additionally, the higher oxygen concentration in HIsarna hot metal only results in a slight increase in reagent consumption.
STEEL RESEARCH INTERNATIONAL
(2022)
